/Engine/Source/Editor/BlueprintGraph/Classes/BlueprintFunctionNodeSpawner.h
Takes care of spawning variousUK2Node_CallFunctionnodes. Acts as the "action" portion of certain FBlueprintActionMenuItems.
class UBlueprintFunctionNodeSpawner : public [UBlueprintFieldNodeSpawner](API\Editor\BlueprintGraph\UBlueprintFieldNodeSpawner)